Chin J Plant Ecol ›› 2023, Vol. 47 ›› Issue (12): 1684-1692.DOI: 10.17521/cjpe.2022.0488
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LIN Chun-Hui1,2, GU Hui-Yi1, YE Qin-Liang3, ZHANG Zhi-Jian3, ZHONG Zhi-Ming3, YI Qi-Fei1,2,*()
Received:
2022-12-05
Accepted:
2023-07-06
Online:
2023-12-20
Published:
2023-07-06
Contact:
*(yiqifei@scbg.ac.cn)
Supported by:
LIN Chun-Hui, GU Hui-Yi, YE Qin-Liang, ZHANG Zhi-Jian, ZHONG Zhi-Ming, YI Qi-Fei. Characteristics of population structure and dynamics in endangered Camellia granthamiana[J]. Chin J Plant Ecol, 2023, 47(12): 1684-1692.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2022.0488
样地 Plot | 地点 Place | 面积 Area (m2) | 经纬度 Longitude and latitude | 海拔 Altitude (m) | 坡向 Slope aspect | 坡度 Slope gradient (°) |
---|---|---|---|---|---|---|
样地1、2、3、4 Plot 1, 2, 3, 4 | 杨梅坝 Yangmeiba | 40 × 40 | 115.11° E, 23. 42° N | 339 | 西南 Southwest | 40 |
样地5 Plot 5 | 杨梅坝 Yangmeiba | 20 × 20 | 115.11° E, 23.43° N | 472 | 西 West | 45 |
样地6 Plot 6 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 554 | 东北 Northeast | 10-45 |
样地7 Plot 7 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 547 | 东南 Southeast | 30 |
样地8 Plot 8 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 528 | 东北 Northeast | 40 |
Table 1 Information on the study plots for the populations of Camellia granthamiana
样地 Plot | 地点 Place | 面积 Area (m2) | 经纬度 Longitude and latitude | 海拔 Altitude (m) | 坡向 Slope aspect | 坡度 Slope gradient (°) |
---|---|---|---|---|---|---|
样地1、2、3、4 Plot 1, 2, 3, 4 | 杨梅坝 Yangmeiba | 40 × 40 | 115.11° E, 23. 42° N | 339 | 西南 Southwest | 40 |
样地5 Plot 5 | 杨梅坝 Yangmeiba | 20 × 20 | 115.11° E, 23.43° N | 472 | 西 West | 45 |
样地6 Plot 6 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 554 | 东北 Northeast | 10-45 |
样地7 Plot 7 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 547 | 东南 Southeast | 30 |
样地8 Plot 8 | 鹿子嶂 Luzizhang | 20 × 20 | 115.18° E, 23.44° N | 528 | 东北 Northeast | 40 |
Fig. 1 Age class structure diagram of Camellia granthamiana populations. I, BD ≤ 2 cm; II, 2 cm < BD ≤ 4 cm; III, 4 cm < BD ≤ 6 cm; IV, 6 cm < BD ≤ 8 cm; V, 8 cm < BD ≤ 10 cm; VI, 10 cm < BD ≤ 12 cm; VII, 12 cm < BD ≤ 14 cm; VIII, 14 cm < BD ≤ 16 cm; IX, BD > 16 cm; BD, basal diameter.
种群 Population | V1 (%) | V2 (%) | V3 (%) | V4 (%) | V5 (%) | V6 (%) | V7 (%) | V8 (%) | Vpi (%) | V′pi (%) | Pmax (%) |
---|---|---|---|---|---|---|---|---|---|---|---|
鹿子嶂种群 Luzizhang population | 32.17 | 53.85 | 50.00 | 61.11 | 14.29 | 33.33 | 25.00 | 0 | 41.52 | 1.54 | 0.04 |
杨梅坝种群 Yangmeiba population | 19.72 | 49.12 | 44.83 | 43.75 | 66.67 | 0 | 33.33 | -50.00 | 32.78 | 1.82 | 0.06 |
Table 2 Dynamic indices of Camellia granthamiana populations
种群 Population | V1 (%) | V2 (%) | V3 (%) | V4 (%) | V5 (%) | V6 (%) | V7 (%) | V8 (%) | Vpi (%) | V′pi (%) | Pmax (%) |
---|---|---|---|---|---|---|---|---|---|---|---|
鹿子嶂种群 Luzizhang population | 32.17 | 53.85 | 50.00 | 61.11 | 14.29 | 33.33 | 25.00 | 0 | 41.52 | 1.54 | 0.04 |
杨梅坝种群 Yangmeiba population | 19.72 | 49.12 | 44.83 | 43.75 | 66.67 | 0 | 33.33 | -50.00 | 32.78 | 1.82 | 0.06 |
种群 Population | 龄级 Age class | 基径 Basal diameter | Ax | ax | lx | ln lx | dx | qx | Lx | Tx | ex | Kx |
---|---|---|---|---|---|---|---|---|---|---|---|---|
鹿子嶂种群 Luzizhang population | I | 0-2 | 115 | 115 | 1 000 | 6.908 | 322 | 0.322 | 839 | 1 847 | 1.847 | 0.388 |
II | 2-4 | 78 | 78 | 678 | 6.520 | 365 | 0.538 | 496 | 1 008 | 1.486 | 0.773 | |
III | 4-6 | 36 | 36 | 313 | 5.746 | 157 | 0.500 | 235 | 512 | 1.637 | 0.693 | |
IV | 6-8 | 18 | 18 | 157 | 5.053 | 87 | 0.556 | 113 | 278 | 1.773 | 0.811 | |
V | 8-10 | 7 | 8 | 70 | 4.242 | 17 | 0.250 | 61 | 165 | 2.365 | 0.288 | |
VI | 10-12 | 6 | 6 | 52 | 3.955 | 17 | 0.333 | 43 | 104 | 1.987 | 0.405 | |
VII | 12-14 | 4 | 4 | 35 | 3.549 | 9 | 0.250 | 30 | 60 | 1.730 | 0.288 | |
VIII | 14-16 | 3 | 3 | 26 | 3.261 | 9 | 0.333 | 22 | 30 | 1.140 | 0.405 | |
IX | >16 | 3 | 2 | 17 | 2.856 | - | - | 8 | 8 | 0.460 | 0.000 | |
杨梅坝种群 Yangmeiba population | I | 0-2 | 71 | 71 | 1 000 | 6.908 | 197 | 0.197 | 901 | 2 232 | 2.232 | 0.220 |
II | 2-4 | 57 | 57 | 803 | 6.688 | 394 | 0.491 | 606 | 1 331 | 1.658 | 0.676 | |
III | 4-6 | 29 | 29 | 408 | 6.012 | 183 | 0.448 | 317 | 725 | 1.776 | 0.595 | |
IV | 6-8 | 16 | 16 | 225 | 5.418 | 113 | 0.500 | 169 | 408 | 1.812 | 0.693 | |
V | 8-10 | 9 | 8 | 113 | 4.725 | 28 | 0.250 | 99 | 239 | 2.125 | 0.288 | |
VI | 10-12 | 3 | 6 | 85 | 4.437 | 28 | 0.333 | 70 | 141 | 1.666 | 0.405 | |
VII | 12-14 | 3 | 4 | 56 | 4.031 | 28 | 0.500 | 42 | 70 | 1.249 | 0.693 | |
VIII | 14-16 | 2 | 2 | 28 | 3.338 | 14 | 0.500 | 21 | 28 | 0.994 | 0.693 | |
IX | >16 | 4 | 1 | 14 | 2.645 | - | - | 7 | 7 | 0.497 | 0.000 |
Table 3 Static life table of Camellia granthamiana populations
种群 Population | 龄级 Age class | 基径 Basal diameter | Ax | ax | lx | ln lx | dx | qx | Lx | Tx | ex | Kx |
---|---|---|---|---|---|---|---|---|---|---|---|---|
鹿子嶂种群 Luzizhang population | I | 0-2 | 115 | 115 | 1 000 | 6.908 | 322 | 0.322 | 839 | 1 847 | 1.847 | 0.388 |
II | 2-4 | 78 | 78 | 678 | 6.520 | 365 | 0.538 | 496 | 1 008 | 1.486 | 0.773 | |
III | 4-6 | 36 | 36 | 313 | 5.746 | 157 | 0.500 | 235 | 512 | 1.637 | 0.693 | |
IV | 6-8 | 18 | 18 | 157 | 5.053 | 87 | 0.556 | 113 | 278 | 1.773 | 0.811 | |
V | 8-10 | 7 | 8 | 70 | 4.242 | 17 | 0.250 | 61 | 165 | 2.365 | 0.288 | |
VI | 10-12 | 6 | 6 | 52 | 3.955 | 17 | 0.333 | 43 | 104 | 1.987 | 0.405 | |
VII | 12-14 | 4 | 4 | 35 | 3.549 | 9 | 0.250 | 30 | 60 | 1.730 | 0.288 | |
VIII | 14-16 | 3 | 3 | 26 | 3.261 | 9 | 0.333 | 22 | 30 | 1.140 | 0.405 | |
IX | >16 | 3 | 2 | 17 | 2.856 | - | - | 8 | 8 | 0.460 | 0.000 | |
杨梅坝种群 Yangmeiba population | I | 0-2 | 71 | 71 | 1 000 | 6.908 | 197 | 0.197 | 901 | 2 232 | 2.232 | 0.220 |
II | 2-4 | 57 | 57 | 803 | 6.688 | 394 | 0.491 | 606 | 1 331 | 1.658 | 0.676 | |
III | 4-6 | 29 | 29 | 408 | 6.012 | 183 | 0.448 | 317 | 725 | 1.776 | 0.595 | |
IV | 6-8 | 16 | 16 | 225 | 5.418 | 113 | 0.500 | 169 | 408 | 1.812 | 0.693 | |
V | 8-10 | 9 | 8 | 113 | 4.725 | 28 | 0.250 | 99 | 239 | 2.125 | 0.288 | |
VI | 10-12 | 3 | 6 | 85 | 4.437 | 28 | 0.333 | 70 | 141 | 1.666 | 0.405 | |
VII | 12-14 | 3 | 4 | 56 | 4.031 | 28 | 0.500 | 42 | 70 | 1.249 | 0.693 | |
VIII | 14-16 | 2 | 2 | 28 | 3.338 | 14 | 0.500 | 21 | 28 | 0.994 | 0.693 | |
IX | >16 | 4 | 1 | 14 | 2.645 | - | - | 7 | 7 | 0.497 | 0.000 |
Fig. 2 Survival curves of Camellia granthamiana populations. I, BD ≤ 2 cm; II, 2 cm < BD ≤ 4 cm; III, 4 cm < BD ≤ 6 cm; IV, 6 cm < BD ≤ 8 cm; V, 8 cm < BD ≤ 10 cm; VI, 10 cm < BD ≤ 12 cm; VII, 12 cm < BD ≤ 14 cm; VIII, 14 cm < BD ≤ 16 cm; IX, BD > 16 cm; BD, basal diameter; lx, logarithmic standard surviving number.
种群 Population | 方程 Equation | R2 | F | p |
---|---|---|---|---|
鹿子嶂种群 Luzizhang population | ax = 7.9064e-0.114x | 0.993 | 927.894 | 0.000 |
ax = 8.0616x-0.413 | 0.905 | 66.526 | 0.000 | |
杨梅坝种群 Yangmeiba population | ax = 8.3721e-0.115x | 0.965 | 192.647 | 0.000 |
ax = 8.3204x-0.401 | 0.805 | 28.886 | 0.001 |
Table 4 Test models of survival curves of Camellia granthamiana populations
种群 Population | 方程 Equation | R2 | F | p |
---|---|---|---|---|
鹿子嶂种群 Luzizhang population | ax = 7.9064e-0.114x | 0.993 | 927.894 | 0.000 |
ax = 8.0616x-0.413 | 0.905 | 66.526 | 0.000 | |
杨梅坝种群 Yangmeiba population | ax = 8.3721e-0.115x | 0.965 | 192.647 | 0.000 |
ax = 8.3204x-0.401 | 0.805 | 28.886 | 0.001 |
Fig. 3 Survival rate and cumulative mortality rate of Camellia granthamiana populations. I, BD ≤ 2 cm; II, 2 cm < BD ≤ 4 cm; III, 4 cm < BD ≤ 6 cm; IV, 6 cm < BD ≤ 8 cm; V, 8 cm < BD ≤ 10 cm; VI, 10 cm < BD ≤ 12 cm; VII, 12 cm < BD ≤ 14 cm; VIII, 14 cm < BD ≤ 16 cm; IX, BD > 16 cm; BD, basal diameter.
Fig. 4 Mortality density rate and hazard rate of Camellia granthamiana populations. I, BD ≤ 2 cm; II, 2 cm < BD ≤ 4 cm; III, 4 cm < BD ≤ 6 cm; IV, 6 cm < BD ≤ 8 cm; V, 8 cm < BD ≤ 10 cm; VI, 10 cm < BD ≤ 12 cm; VII, 12 cm < BD ≤ 14 cm; VIII, 14 cm < BD ≤ 16 cm; IX, BD > 16 cm; BD, basal diameter.
龄级 Age class | 鹿子嶂种群 Luzizhang population | 杨梅坝种群 Yangmeiba population | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
原始数据 Primary data | M2 | M4 | M6 | M8 | 原始数据 Primary data | M2 | M4 | M6 | M8 | |
I | 115 | 71 | ||||||||
II | 78 | 97 | 57 | 64 | ||||||
III | 36 | 57 | 29 | 43 | ||||||
IV | 18 | 27 | 62 | 16 | 23 | 43 | ||||
V | 7 | 13 | 35 | 9 | 13 | 28 | ||||
VI | 6 | 7 | 17 | 43 | 3 | 6 | 14 | 31 | ||
VII | 4 | 5 | 9 | 25 | 3 | 3 | 8 | 20 | ||
VIII | 3 | 4 | 5 | 12 | 33 | 2 | 3 | 4 | 10 | 24 |
IX | 3 | 3 | 4 | 7 | 19 | 4 | 3 | 3 | 6 | 15 |
Table 5 Time sequence analysis of survival curves of Camellia granthamiana populations
龄级 Age class | 鹿子嶂种群 Luzizhang population | 杨梅坝种群 Yangmeiba population | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
原始数据 Primary data | M2 | M4 | M6 | M8 | 原始数据 Primary data | M2 | M4 | M6 | M8 | |
I | 115 | 71 | ||||||||
II | 78 | 97 | 57 | 64 | ||||||
III | 36 | 57 | 29 | 43 | ||||||
IV | 18 | 27 | 62 | 16 | 23 | 43 | ||||
V | 7 | 13 | 35 | 9 | 13 | 28 | ||||
VI | 6 | 7 | 17 | 43 | 3 | 6 | 14 | 31 | ||
VII | 4 | 5 | 9 | 25 | 3 | 3 | 8 | 20 | ||
VIII | 3 | 4 | 5 | 12 | 33 | 2 | 3 | 4 | 10 | 24 |
IX | 3 | 3 | 4 | 7 | 19 | 4 | 3 | 3 | 6 | 15 |
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